At inferior conjunction, the superior planet is " in opposition " to the Sun as seen from the inferior planet ( see the diagram ).
12.
This is because Venus is an inferior planet, meaning it is located between the Earth and the sun . ( Mars and Jupiter are superior planets .)
13.
Wittich may have been influenced by Valentin Naboth's book " Primarum de coelo et terra " in adopting the Capellan system to explain the motion of the inferior planets.
14.
The term " inner planet " should not be confused with " inferior planet ", which refers to those planets that are closer to the Sun than Earth is ( i . e . Mercury and Venus ).
